Machine for making tacks, nails, rivets, pins, or the like



Nov. 1, 1927. 1,647,830

F. HUMPHRIS MACHINE FOR MAKING TACKS, NAILS, RIVETS, PINS, OR THE LIKE Filed Dec. 12. 3 Sheets-Sheet l .i F WLMA m fearn ll.

Nov. 1, 1927.

F. HUMPHRIS MACHINE FOR MAKING TACKS, NAILS, RIVETS, PINS, OR THE LIKE Filed Dec. 12. 1922 3 Sheets-Sheet 2 firm-Agra? pazzlmgwirw Nov. 1, 1927.

F. HUMPHRIS MACHINE FOR MAKING TACKS, NAILS, RIVETS, PINS, OR THE LIKE Filed Dec. 12; 19,22 3 Sheets-Sheet 5 uni/177v)? WaIzZZJZaM ZIQ WW Patented Nov. l, 1927.

UNITED STATES 1,647,839 PATENT, OFFICE.

ERAIIK nor/tennis, E rAnKsronE, ENGLAND, AssIeNoE or ONE-HALE T0 KENNETH ALEXANDER EoBEnrs, or Lorrnon, nnsrnnn.

MACHINE FOR MAKING racks, nArLs, RIVETS, Pins. OR THE LIKE.

A encatioa filed December 12, 1922, Serial No. 606,496, and in sitar Britain December 20, 1921.

I The improved machin-e whichis the subject 0t this invention comprises a number of torming dies whichare mounted around the periphery of a rotary cylindrical shell or drum and are split in planes passing through i the axis otrsaid drunnone partof each die being secured to the drum and the other part beingmovable radially by means or" staticnarycams carried by a camshaft around whichthe. drum rotates supported by extension piecesthrough which the camshaft passesdentrallvthe' cams acting through ejector rodsto move the corresponding radially movable die parts to a closed position, to receive the material to be acted upon and to hold it whilst it is brought to the required shape in the dies, after which the movabledie part is moved radially to (3]6Ct the finished product. Around the drum are mounter meansfor cutting several wires or the like, for guiding and for thrusting them into the die cavities in which they are shaped as required by the operation of punch plates. r

In these drawings :e v I Figure l is an end elevation, of one type of a m'achine'embodying the invention having some of the parts removed, and

Figure 2 is a frontelevation of the machine partly in section through the dotted line AA, as shown in Figure l, with some of the parts removed.

Figure 8 is an end elevation on an enlarged scale partly in section, of the lntermittently-rotating die-carrying cylindricalshell and co-operating members. i p

Figure 4 is a perspective view partly in section or a part of the intermittently-r0- tating die-carrying-cylindricalshell with a part of a radially-opening two-part-die.

Figure 5 is a perspective view, partly in section, of a multiple-head-form1ng pressurepunch-plate.

- Like letters of reference refer to like parts throughoutthe drawings; The framework (v-wot the. mac ine is wa ranged vto accomn odate a bolster .7), ram 70,}

an intermi'ttently rotating die-c'arrying-cylindrical-shell d, which; is mounted. in; suitable bearings and astationary-cam shaft e. The die-carrying-cyl-indrical-shell cl 1s proa vided with anumberottworpart dies f, one

1 part [i of each is secured inthe die-carrying cylindrical-shell dand; tlie other part: i i

slidably-mounted therein so as to open and close in a radial path; said two-part dies 7 are provided with a plurality of die-torming-cavities f equally spaced and located with the axes thereof in alignment with the radially-placed joint or division f existing between the engaging faces of thetwo-part dies One half or partf of each said two part die 7 is adjustably-secured in atransverse slot (Z by means of bolts 7? or the like, within the periphery of said;cylindrical-shell d; the other half or part f of each said twopart die 7 is slidably housed or mounted in the remaining part of said transverse slot (Z Connectedto each of the said slidablymounted, half-die parts is a setof radiallv placed guide-stem-ejector-rods 9 provided with rollers g on their free ends; these ejector -rods g pass through suitable radial perforations or bearings (Z in the cylindrical-shell (Z, and engage through the medium of their rollers at one period of the revolution of said cylindrical-shell d with a stationaryejector-cam 6 they also contact for controlling their closing with an ejectorrod-return-cam z' both located adjacent to the centre or axis of the cylindricalshell (Z.

Attached to said die-carrying-cylindricalshell (Z at one or both ends thereof, is provided a driven member or members it of an intermittent-gearing of the known kind, which is caused tomove by its mating-part or parts k suitably attached on the frame a of the machine and driven by bevel-gear-' ing,.shafts and the like 29 from its flywheel in any known manner.

In combination with the said two-part dies f, and provided on the ram 0 of the machine isa multiple head-forming pressure-punchplate is for finishing the products.

A transverse-thrust-bar Z is constrained to move in a radial path and in alignment with the axis of the die-cavities f by means of director-rollers u attached to the cropperblade-ram 0 of the machine, which rollers to operate upon a, set of director-levers o tulcrumed atone end thereof toa shaft-o v attached in suitable bearings to the frame .a of the machine, and contacting at their-other end, with, aset ot rollers Z providedon the transverse-thrustbar Z. On extension-pieces a secured to or integral with the croppen' blade-ram 0 is provided amultiplewiree ci-opper blade' 0; which acts injcombination. with anotherblade 0 provided i, with cavities 0 for guiding the stock or Wire m into his the die cavities f and this blade 0 is secured to the frame a of the machine. The rod, wire or other stock m is fed into the machine by any suitable wire-feed mechanism, not shown in the drawings.

Diametrically opposite the heading or finishing-pressurepunch-plate 7c is an adjustable bolster b adjusted vertically by wedges g which are moved horizontally by bolts r.

The machine, the subject of this invention, will preferably be employed to feed and make into products a great quantity of rods or wires m side by side in multiple torm, but for ease of description, it will hereinafter be described as dealing with, and operating upon, one wire m and the process it goes through to manufacture a tack t.

The operations are as follows A wire on is fed between the cropperblades 0 and 0- and at the same time partly into one 01" the multiple-die-cavities f and is cut ofi by the descending cropper-blade 0. As soon as the cutting-oft operation is completed the intermittentgears h and h turn the cylindrical shell (Z around one division bringing the cut-off wire m under the transverse-thrust-bar Z which is con strained by its roller Z to force the cut-off wire m deeply into the die f; the intermittent-gear 7L and 7&1 again comes into operation and turns the cylindrical shell (Z round another division; bringing the cut-oft wire m under the finishing-punch-plate 70 by which it is headed and finished. The intermittent gear [7L and 71/1 again comes into op eration and turns the cylindrical shell cZ round another division bringing the cut-off wire m now a finished tack 25, away from under the heading plate 70 and into a nonoperative position. The intermittent gear in and if again comes into operation and turns the cylindrical shell (Z round another di vision and as this occurs the rollers on the guide-stem-ejector-rods g ride up the cam face of the stationary-cam e and force the slidably-mounted halt of the two part die 7 out in a radial path, thus ejecting the finished tack 2? into a delivery chute s. The intermittent-gears 7a and 71 again come into operation and turn the cylindrical shell (Z round another division; and whilst this is being done the rollers g on the guide-stemejector-rods g on the sliding half f of the die f are caused by the cam to disengage from the raised face of the cam e and the sliding half of the die f is thus closed to its normal receiving position. These movements continue during the running of the machine,

The several heading, pointing and parting operations can be performed in this machine simultaneously by the several dies and on separate blanks, cut-oits or studs in quick succession, without putting undue strains on the die-carrying-cylindrical-shell-shaft, due

to the support of said cylindrical-shell by the bolster before referred to.

lVhat I claim is 1. A machine for making tacks comprisin a rotary cylindrical shell, a plurality of forming dies around the periphery of the shell, each of said dies being divided on a plane radial to the rotary shell to provide two members having oppositely arranged blank shaping cavities therein, one member fixed in the shell and the other movable radially therein, means for sliding the movable member outwardly radially with respect to the axis of the shell in contact with the fixed member, and means for retracting the said movable member.

2. A machine for making tacks comprising a rotary cylindrical shell, a die member fixed in the shell, a die member movable radially with respect to the axis of the shell, the said dies being arranged in contact and having oppositely arranged cavities forming a single blank shaping die cavity and stationary cams arranged within the shell to effect the positive sliding movement of the said movable die member radially in contact with the fixed member in opposite directions respectively.

3. A machine for making tacks comprising a rotary cylindrical shell, a plurality of movable die members respectively coacting with corresponding fixed die members, the said die members being arranged in pairs in contact on a plane radial to the rotary shell and each having parts of a single blank shaping cavity formed therein, and means for sliding said movable die members radi ally with respect to the aXis of the shell in contact with the fixed members.

1. A machine for making tacks comprising a rotary cylindrical shell, a plurality of die members fixed in the shell, a plurality oi movable die members respectively coacting with the fixed die members and in sliding contact therewith on planes radial to the rotary shell, said opposing die members having complemental oppositely arranged die cavities in each of the pairs consisting of a fixed and a movable die member, and means for positively sliding the said movable die members separately in contact with the tilted members in a direction radial to the axis of the shell.

5 A machine for making tacks comprising a rotary cylindrical shell, a plurality of die members arranged in pairs, each pair comprising one member fiXed in the shell, and a die member movable radially in the shell'in contact with the fixed member, the contacting faces of the members being respectively arranged radially to the axis of the shell, the contacting faces having oppositely arranged complemental blank receiving cavities, and means for sliding the movable die members separately in their radial direction of movement in contact with the fixed members.

6. A machine for making tacks comprising a rotary cylindrical shell, a plurality of die members arranged in pairs spaced apart around the shell, each pair comprising a. member fixed in the shell, and a die member movable radially in the shell in contact with the fixed member on a plane radial to the shell, the contacting members having oppo- Fitely arranged complemental cavities forming a single blank shaping cavity, means for imparting an intermittent rotary motion with the fixed die members on a plane radial to the rotary shell, each die member having a part of a single blank shaping die cavity formed therein, a finishing punch, means for intermittently rotating the shell to bring pairs or" die members in succession beneath the said punch, and means for separately sliding said movable die members radially with respect to the aXis of the shell in contact with the fixed die members.

8. A machine for making tacks comprising a rotary cylindrical shell, a plurality of die members fixed in the shell, slots in the shell, a plurality of die members movable in the shell, the said members being arranged in pairs in contact on planes radial to the rotary shell and each member of a pair having part of a blank forming cavity complemental to the cavity of the other member, a thrust bar, means for inter mittently rotating the shell to bring pairs of die members in succession into alignment with the thrust bar, and means for separately sliding said movable die members radially with respect to the axis of the shell in contact with the fixed die members.

9. A machine for making tacks comprising a rotary cylindrical shell, die members arranged in pairs in contact on a'plane radial to the rotary shell and having oppo-' sitely disposed blank shaping cavities there in, one member of each pair being fixed in the shell and the other movable therein, a finishing punch movable radially with resnect to the axis of the shell, a bolster arranged diametrically opposite to the finishing punch and means for separately moving said movable die members radially with respect to theaxis of the shell.

10; A machine for making tacks comprising a rotary cylindrical shell, die members arranged in pairs one member of each pair being fixed and the other movable in a slot in the shell, means for bringing the members of each pair into register, die cavities enclosed between the members of each pair, means for feeding material into the die cavities, means for cutting ofi? to the required length the material fed into the die cavities, and means for imparting a sliding movement to the movable die members in a direction radial to the axis of the shell.

11. A machine for making tacks, comprising a-rotary cylindrical shell having a radial slot, a die member fixed in the shell, a die member in contact with the fixed member and movable radially with respect to the ing a rotary cylindrical shell having a radial slot, a die member fixed in the shell, a die member in contact with the fixed die member and slidable radially with respect to the axis of the shell in said slot, said die members having oppositely arranged blank shaping cavities in the contacting faces, means for bringing the slidable member in contact with the fixed die member to a position in which the blank shaping cavities are r in positions to hold a blank therein, and means for moving the slidable die member radially to the shellto eject a finished blank from between the said die members in contact with the fixed die member.

London, England, 1st December, 1922.

FRANK HUMPHRIS. 

